<template>
  <div>
    <div class="search"><input v-model="keyword" class="search-input" type="text" placeholder="输入城市名或拼音" /></div>
    <div class="search-content" ref="search" v-show="keyword">
      <ul>
        <li class="search-item border-bottom" v-for="item of list" :key="item.id" @click="handleCityClick(item.name)">{{ item.name }}</li>
        <li class="search-item border-bottom" v-show="hasNoData">没有找到匹配数据</li>
      </ul>
    </div>
  </div>
</template>

<script>
import Bscroll from 'better-scroll';
import { mapMutations } from 'vuex';
export default {
  name: 'CitySearch',
  props: {
    cities: Object
  },
  data () {
    return {
      keyword: '',
      list: [],
      timer: null
    };
  },
  methods: {
    handleCityClick (city) {
      this.keyword = ''
      this.changeCity(city);
      this.$router.push('/');
    },
    ...mapMutations(['changeCity'])
  },
  computed: {
    hasNoData () {
      return !this.list.length;
    }
  },
  watch: {
    keyword () {
      if (this.timer) {
        clearTimeout(this.timer);
      }
      if (!this.keyword) {
        this.list = [];
        return;
      }
      this.timer = setTimeout(() => {
        const result = [];
        for (let i in this.cities) {
          this.cities[i].forEach(value => {
            if (value.spell.indexOf(this.keyword) > -1 || value.name.indexOf(this.keyword) > -1) {
              result.push(value);
            }
          });
        }
        this.list = result;
      }, 100);
    }
  },
  mounted () {
    this.scroll = new Bscroll(this.$refs.search, {
      click: true
    });
  }
};
</script>

<style lang="stylus" scoped>
@import '../../../assets/styles/varibles.stylus'

.search
  height 0.72rem
  padding 0.1rem
  background-color $bgColor
  .search-input
    box-sizing border-box
    width 100%
    height 0.62rem
    padding 0 0.1rem
    line-height 0.62rem
    text-align center
    border-radius 0.06rem
    color #666
.search-content
  position absolute
  top 1.68rem
  left 0
  right 0
  bottom 0
  z-index 1
  background-color #EEEEEE
  overflow hidden
  .search-item
    line-height 0.62rem
    padding-left 0.2rem
    color #666
    background-color #fff
</style>
